Page 2070 of 5621
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-527
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS0053E
TBWT0991E
Page 2072 of 5621
![INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-529
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Revision: 2006 January2006 M35/M45
2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM) INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-529
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Revision: 2006 January2006 M35/M45
2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM)](/manual-img/42/57023/w960_57023-2071.png)
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-529
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Revision: 2006 January2006 M35/M45
2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM) harness connector.
2. Turn ignition switch ON.
3. Check voltage between FPCM terminal 2 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E106, B4
Harness for open or short between FPCM and harness connector B4
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK FPCM GROUND CIRCUIT-I FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between FPCM terminal 3 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to power in harness or connectors.
: Vehicle front 1. FPCM 2. Dropping resistor
Voltage: Battery voltage
PBIB2708E
PBIB0099E
Continuity should exist.
Page 2073 of 5621
![INFINITI M35 2006 Factory Service Manual EC-530
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
5. CHECK FPCM GROUND CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect harness connectors B162, B64.
2. Disconnec INFINITI M35 2006 Factory Service Manual EC-530
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
5. CHECK FPCM GROUND CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect harness connectors B162, B64.
2. Disconnec](/manual-img/42/57023/w960_57023-2072.png)
EC-530
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
5. CHECK FPCM GROUND CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect harness connectors B162, B64.
2. Disconnect dropping resistor harness connector.
3. Check harness continuity between the following;
harness connector B64 terminal 1 and dropping resistor terminal 2,
FPCM terminal 4 and dropping resister terminal 2.
Refer to Wiring Diagram.
4. Check harness continuity between the following;
harness connector B64 terminal 1 and ground,
FPCM terminal 4 and ground.
Refer to Wiring Diagram.
5. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B162, B64
Harness for open or short between harness connector B64 and dropping resistor
Harness for open or short between FPCM and dropping resistor
Harness for open or short between harness connector B64 and ground
Harness for open or short between FPCM and ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
: Vehicle front 1. FPCM 2. Dropping resistor
Continuity should exist.
Continuity should not exist.
PBIB2708E
Page 2074 of 5621
![INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-531
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Revision: 2006 January2006 M35/M45
7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness c INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness c](/manual-img/42/57023/w960_57023-2073.png)
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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Revision: 2006 January2006 M35/M45
7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 38 and FPCM terminal 4.
Refer to Wiring Diagram.
3. Check harness continuity between ECM terminal 38 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B2, M13
Harness connectors M72, F102
Harness for open or short between ECM and FPCM
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK FPCM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 39 and FPCM terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors B2, M13
Harness connectors M72, F102
Harness for open or short between ECM and FPCM
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK FPCM
Refer to EC-532, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace FPCM.Continuity should exist.
Continuity should not exist.
Continuity should exist.
Page 2082 of 5621
DTC P1550 BATTERY CURRENT SENSOR
EC-539
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS0053V
TBWT0995E
Page 2088 of 5621
DTC P1551, P1552 BATTERY CURRENT SENSOR
EC-545
[VQ35DE]
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS00542
TBWT0995E
Page 2094 of 5621
DTC P1553 BATTERY CURRENT SENSOR
EC-551
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS00549
TBWT0995E
Page 2100 of 5621
DTC P1554 BATTERY CURRENT SENSOR
EC-557
[VQ35DE]
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS0054G
TBWT0995E